doc: fix copyright notice in AVP guide
doc: fix copyright notice in AVP guide

Aligning the Wind River copyright notices to be consistent with the
other files which bare the Wind River copyright notice.

Fixes: 32113d352d3b ("doc: replace license text with SPDX tag in AVP guide")

Signed-off-by: Allain Legacy <cf9f8e06ab4540486643794deada051d3a16b292@windriver.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk